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Showing 180 results View by: Thread Post Sort by
  • RE: DRV8870: Operation stability problem

    Il-tae Jeon
    Il-tae Jeon
    Unfortunately, we haven't been able to fix the problem yet. The V_dc supply voltage is approximately DC 43V. Since it is supplied through a transformer, what problems can it cause if the power is supplied over 45V? I purchase new parts and produce…
    • 11 days ago
    • Motor drivers
    • Motor drivers forum
  • RE: DRV8870: Motor driver recommendation inquiry

    Pablo Armet
    Pablo Armet
    Hi JH, Does the above reply answer your question? -Pablp
    • 10 days ago
    • Motor drivers
    • Motor drivers forum
  • DRV8870: The VM power pin is burned out

    Cherry Zhou
    Cherry Zhou
    TI Thinks Resolved
    Part Number: DRV8870 Hi team, Issue: the VM pins are burned out at use. On the script, VREF is 5V, current limiting resistor is 0.2ohm, VM voltage is 24V. The output PWM signal is transmitted as a signal and is not used as a drive motor with a load current…
    • 1 month ago
    • Motor drivers
    • Motor drivers forum
  • DRV8870: The voltage ripple

    Zoey Wu
    Zoey Wu
    TI Thinks Resolved
    Part Number: DRV8870 Hi team, my customer find that the negative voltage ratings will exceed the maximum rating (-0.7V) . The minimum voltage is -0.9V and last for about 100ns. Will it damage our products and do u have any advice to reduce the minimum…
    • 2 months ago
    • Motor drivers
    • Motor drivers forum
  • DRV8870: Reverse Current Protection Circuit Inquiry

    JH Shin
    JH Shin
    TI Thinks Resolved
    Part Number: DRV8870 Hello, My customer is considering using the DRV8870 for DC motor control. Input power 24V, estimated current consumption is 1A. They assume that when controlling a DC motor (converting from CW to CCW or Pause), a reverse current will…
    • 2 months ago
    • Motor drivers
    • Motor drivers forum
  • Answered
  • DRV8850: 4x IN DRV8850 vs 2x IN DRV8870

    Gary Zeng
    Gary Zeng
    Resolved
    Part Number: DRV8850 Other Parts Discussed in Thread: DRV8870 , Hi Ti experts, Why does DRV8850 have 4x input pin to control H bridge. Correspondingly, the DRV8870 has only 2x input. What are the application scenarios of the four inputs. In DRV8850 datasheet…
    • Resolved
    • 3 months ago
    • Motor drivers
    • Motor drivers forum
  • RE: DRV8870: The PWM modulation waveform is abnormal

    aiwen chen
    aiwen chen
    Hi Pablo; Thank you for your concern,At present, we still use MOS to design emergency stop control circuits。Thanks!
    • 3 months ago
    • Motor drivers
    • Motor drivers forum
  • DRV8870: DR8870

    aiwen chen
    aiwen chen
    TI Thinks Resolved
    Part Number: DRV8870 Other Parts Discussed in Thread: DRV8770 DR8870 does not have an emergency stop function, the impact force is too large when the motor is stopped in an emergency, the full-bridge circuit used in the past, controlled by the SD foot…
    • 4 months ago
    • Motor drivers
    • Motor drivers forum
  • RE: DRV8870: As soon as the board is powered on, the DC brush motor driven by DRV8870 keeps rotating rapidly

    Brian Dang
    Brian Dang
    Hi Pablo, Pablo Armet said: I will close this ticket since it seems the issues was probably caused by overheating on the IC pins. If you observe the same issue on another IC, you can submit a new question. chenzhuang said: If there is a specific soldering…
    • 6 months ago
    • Motor drivers
    • Motor drivers forum
  • RE: DRV8870: Drive matching issue

    Pablo Armet
    Pablo Armet
    Hi Cherry, Can you provide more information if possible? Based on the attached waveforms, there are quite a lot of issues that I can see. Startup waveform is quite unstable. The current dips down to -2A for a short amount of time and then oscillates…
    • 4 months ago
    • Motor drivers
    • Motor drivers forum
>

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